Nozzle



F. CRAIGIE AND J. HINES.

I I NOZZLE. APPLICATION FILED MAY 3. 19I9- Patented Sept. 7,1920.

UNITED STATES PATIENT OFFICE.

FRANK CRAIGIE AND JOHN I-IINES, OF CHICAGO, ILLINOIS.

NOZZLE.

' Be it known that we, FRANK CRAIGIE-2LHC1 JOHN linens, citizens of the United States,

' residing at Chicago, county of Cook, and

State of Illinois, have invented certain new and useful Improvements in Nozzles, of which the following is a specification.

This invention relates to improvements in spray nozzles.

An object of the invention is to provide a device whereby jets of liquid may be discharged from a nozzlein the form of a fine sprayer mist.

It is also an object of the invention to effect the discharge of the liquid in finely divided form through means which cause a deflection of the liquid from that direction in which it'iiows through the nozzle, and to force the liquid under pressure through a path in which it is subjected to the action of centrifugal force prior to its complete discharge.

It is also an object of the invention to provide a device of this character particularly adapted for saturating air with moisture by discharging the spray from the device in the form of a large cone spreading from the point of discharge outwardly.

l/Vith these and other objects in view, the preferred embodiment of the invention is described in the following specification and, illustrated in the accompanying drawing, wherein Figure 1 is a side elevation of the complete device;

Fig. 2 is a central longitudinal section through the stem;

Fig. 3 is a front view of a nozzle head plate;

Fig. 4 is a side elevation of the nozzle head, and

Fig. 5 shows a front elevation and section respectively of the means for deflecting the stream emanating from the nozzle head from its path for the discharge through the nozzle cap.

The device comprises a nozzle head 1, which consists of a stem 2 and a nozzle head plate 3. The stem may be provided with ordinary tapering pipe thread 4 for attachment to a suitable conduit for the liquid, and adjacent to said threaded portion it has a hexagonal portion 5 to facilitate the attachment of the nozzle head by means of a wrench or other tool to the conduit. A tapering passage 6 extends axially through Specification of Letters Patent.

Patented Sept. 7, 1920.

1919. Serial No. 294,540.

the stem 2 of the nozzle head 1, opening at its narrower end in the front surface of the stem.

The stem is integral with the nozzle head plate 3, which is preferably circular, as shown in 'Fig. 3, and which is located in a plane perpendicular to the axis of the stem. The front portion of the head plate 3 has external threads for the attachment of a nozzle cap. This circular plate 8, while being integral with the stem 2 of the nozzle head, is eccentric to the same, and readily detachable means are provided for deflecting the stream of water discharged from the passage 6 on the outer surface of the plate 3 in a direction in which this stream will be gradually deflected toward the center portion of the head plate 3.

These deflecting means, in the. present instance, comprise a disk 7, havinga cutout portion in the form of a spiral 8, the outer end of which, as indicated at 9, will overlie, when placed in operative position, the discharge opening of the passage 6, while'the inner end of the spiral, as indicated at 10, will overlie the central portion of the head plate 3, which central portion, as stated above, is located eccentrically with respect to the opening throiwh which the liquid flows in the nozzle head. The head plate 3 is provided with sockets 11, which serve for receiving the pins 12, projecting from the lower side of the deflecting plate 7, whereby said deflecting plate may readily be secured to the front surface of the head plate or may be detached therefrom when desired.

This deflecting plate also is located in a plane at right angles to the direction of flow tion whereby it can be attached to the margin of the head plate 8. The central portion of the cap, as shown in Figs. 1 and 2, is raised in opposition to the central portion of the head plate 3, whereby a conical or concave chamber 1%.- is provided. This chamber 14 communicates with a flaring central discharge opening 15 in the raised portion of the cap.

All of the parts preferably are made of bronze or some other metal which will not be affected by contact with liquids.

It will be seen from the above that the liquid, after having flowed in axial direction through the nozzle head 1, is deflected from this path and is confined in the spiral path between the portions 9 and 10 of the spiral plate 7, so as to flow in a plane at right angles to the axis of the passage 6. Owing to the contact of the deflecting means 7 with the surface of the head plate 3' and with the inner surface of the nozzle cap 13 respectively, the liquid is forced to flow in this spiral reduced path at great speed, entering suddenly the enlarged chamber 10,

p which is in communication with the cono eninc 15 are relativel lar e so that there is very little dan er of having these passages clogged up between the free end of the opening 6 and the discharge opening 15. If

a foreign body should be in the liquid, the

liquid may force it through the discharge opening 15, provided this foreign body is sufficiently soft. If, however, it is a solid body, the nozzle cap 18 can readily be removed and the spiral passage can readily be cleaned or another deflecting plate 7 may be put in place. I 1

We claim: V o 1. In a device ofthe character described,

the combination of a nozzle having a tapering axial passage therethrough, said nozzle including a head plate, a plate having a spiral cut-out secured to said head plate, and a nozzle cap in opposition to said head plate and secured thereto,-said plate with the spiral cut-out being located on said head plate in a position in which oneend of the spiral cut-out communicates with the discharge opening of the axial passage,'while the other end of the spiral cut-out is in opposition to the central portion of the nozzle cap, said nozzle cap being provided in its central portion with a cavity and a discharge opening in said cavity.

ing means mounted on said head plate and adapted to convey the liquid discharge from the passage toward the center of said head plate, and a nozzle 'cap secured to said head plate and having a discharge opening in opposition to the center of said head plate.

8. In a device of the character described, the combination of a nozzle having an axial passage therethrough and having a circular head plate with its center disposed eccentrically to said passage, a plate having a single spiral cut-out portion detachably mounted on said circular head plate, the outer end or said cut-out portion overlying the center of said circular head plate, and a nozzle cap removably mounted on said circular head plate having a concave chamber in opposition to the inner end of said deflecting spiral and having an outwardly flaring discharge opening communicating with said chamber.

4. In a device of the character described, the combination of a nozzle having an axial tapering passage therethrough, a circular head plate integral with said nozzle and having its center eccentric with respect to said passage and in a plane at right angles to the axis of said passage, a nozzle cap having a central chamber on its, inner surface and an outwardly flaring discharge opening communicating with said chamber, said nozzle cap being secured to said circular head plate, and a spiral deflector confined between said head plate and said nozzle cap, and adapted to deflect the liquid discharged from said axial passage in a spiral path toward the chamber of said nozzle cap. 

